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______ he has said sorry to you, please give him another chance. A.When B.Since C.Before D.Until
1年前
That boy ________ be Tom. He has gone to his hometown to visit his grandparents.
1年前
阅读下文,完成下列各题。 卢程,不知其世家也。唐昭宗时,举进士,为盐铁出使巡官。唐亡,避乱燕、赵,变服为道士,游诸侯间。
1年前
We haven't seen ______ for four years.
1年前
观察下面单项式:a,-2a的平方,4a的立方,-8a的四次方……根据你发现的规律,第八个式子是
1年前